Department of Chemical Engineering, Dr B R Ambedkar National Institute of Technology Jalandhar (Punjab) India, Jalandhar, Punjab, 144011, India.
Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.
Environ Sci Pollut Res Int. 2021 Mar;28(10):12202-12231. doi: 10.1007/s11356-020-12049-4. Epub 2021 Jan 6.
The increased CO quantities in the environment have led to many harmful effects. Therefore, it is very important to decrease the CO levels in the environment. CO capture along with safe and permanent storage using mineral CO sequestration method can play an important role to reduce carbon emissions into the environment. Mineral sequestration is a stable storage method that provides long-term storage and an appropriate substitute for the more popular geological storage method. The process is most suited for places where there is a lack of underground cavities for underground geological storage. Minerals rich in Ca and Mg are used predominantly in carbonation reactions. In addition, those alkaline wastes that are rich in Mg and Ca such as cement waste, steel slag and many process ashes can also be employed in CO sequestration. Mineral carbonation could be used for the sequestration of billions of tonnes of CO every year. However, various drawbacks related to mineral carbonation still need to be addressed, such as resolving the slow rate of reactions, necessity of large amounts of feedstock, decreasing the high overall cost of CO sequestration and reducing the huge energy requirements to accelerate the carbonation reaction. This study explores a number of carbonation methods, parameters that control the process and future potential applications of carbonated products.
环境中 CO 数量的增加导致了许多有害影响。因此，降低环境中的 CO 水平非常重要。使用矿物 CO 捕集的方法进行 CO 捕集和安全永久存储可以在减少碳排放方面发挥重要作用。矿物封存是一种稳定的存储方法，提供长期存储，是更受欢迎的地质存储方法的合适替代品。该过程最适合缺乏地下地质存储地下洞穴的地方。富含 Ca 和 Mg 的矿物质主要用于碳酸化反应。此外，富含 Mg 和 Ca 的碱性废物，如水泥废物、钢渣和许多工艺灰也可用于 CO 捕集。矿物碳酸化每年可用于封存数十亿吨的 CO。然而，与矿物碳酸化相关的各种缺点仍有待解决，例如解决反应速度慢的问题、需要大量的原料、降低 CO 捕集的高总成本以及减少加速碳酸化反应所需的巨大能源需求。本研究探讨了多种碳酸化方法、控制过程的参数以及碳酸化产品的未来潜在应用。
